Properties of the Number 91992

Ninety-One Thousand Nine Hundred Ninety-Two

Basics

Value: 91991 → 91992 → 91993

Parity: even

Prime: No

Previous Prime: 91969

Next Prime: 91997

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 3833

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 3833, 7666

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110011101011000

Octal: 263530

Duodecimal: 452A0

Hexadecimal: 16758

Square: 8462528064

Square Root: 303.3018298658945

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Expansion of g.f. A(x) satisfying A(x) = 1 + x*(A(x)² + A(-x)²)/2 + x*(A(x)⁴ - A(-x)⁴)/2. A368629

a(1) = 1; for n > 1, a(n) = σ(sum of the previous terms) where σ(k) = sum of the divisors of k. A165929

Numbers n > 13 such that xⁿ + x¹³ + x¹² + x¹¹ + x¹⁰ + x⁹ + x⁸ + x⁷ + x⁶ + x⁵ + x⁴ + x³ + x² + x + 1 is irreducible over GF(2). A57489

a(n) is the smallest divisor of triangular number T(n) := n(n+1)/2 not already in the sequence. A111273

Members of 3-cycles of permutation A111273. A113701

Numbers n such that 5·n-3 and 5·n+3 are both primes. A91992